<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<!--view视图-->
<div id="app">

    <!--    <p>列表书籍</p>-->
    <!--    <ul>-->
    <!--        <li>JAVA</li>-->
    <!--        <li>Linux</li>-->
    <!--        <li>lalla</li>-->
    <!--    </ul>-->
    <todo>
        <todo-title slot="todo-title" :title="title"></todo-title>
        <todo-items slot="todo-items" v-for="(item,index) in todoItems" :item="item" :index="index" @remove="removeItems(index)"></todo-items>
    </todo>

</div>


<!--1.导入vue.js-->
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>

    //slot:插槽
    Vue.component("todo", {
        template:
            '<div>\
            <slot name="todo-title"></slot>\
            <ul>\
            <slot name="todo-items"></slot>\
            </ul>\
            </div>'
    });
    Vue.component("todo-title",{
        props: ['title'],
        template: '<div>{{title}}</div>'
    });
    Vue.component("todo-items",{
        props: ['item','index'],
        //只能绑定当前组件的方法
        template: '<li>{{index}}---{{item}} <button @click="remove">删除</button></li>',
        methods: {
            remove: function (index) {
                //this.$emit 自定义时间分发 参数一：自定义事件名
                this.$emit('remove',index);
            }
        }
    });

    var vm = new Vue({
        el: "#app",
        data: {
            title: "标题",
            todoItems: ["java","linux","666"]
        },
        methods: {
            removeItems: function (index) {//index:代表数组下标
                console.log("删除了"+this.todoItems[index]+"ok");
                this.todoItems.splice(index,1);//一次删除一个
            }
        }
    });
</script>
</body>
</html>